When creating a dvPort group, which port binding option assigns a port to a virtual machine when the virtual machine is first powered on?
A.
Static binding
B.
Flexible
C.
Ephemeral
D.
Dynamic binding
When creating a dvPort group, which port binding option assigns a port to a virtual machine when the virtual machine is first powered on?
When creating a dvPort group, which port binding option assigns a port to a virtual machine when the virtual machine is first powered on?
According to :
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1022312
BOTH C and D are correct! The difference is that Ephemeral ports can be also created directly on the ESXi host!
”
In a port group configured with dynamic binding, a port is assigned to a virtual machine only when the virtual machine is powered on and its NIC is in a connected state.
”
AND
”
In a port group configured with ephemeral binding, a port is created and assigned to a virtual machine when the virtual machine is powered on and its NIC is in a connected state.
“
I guess the key word is “first” powered on ….
How is the key word “first” relevant?
As Tony said, according to vmware docs the only difference between dynamic and ephemeral is the ability to choose this binding directly on an ESXi host. The docs dont mention “first” powered on anywhere.
actually I found this reference in vSphere 5.1 Documentation Center:
http://pubs.vmware.com/vsphere-51/topic/com.vmware.vsphere.vcenterhost.doc/GUID-6A9312BE-B469-48DE-849B-FFBC4F187218.html
Select Dynamic binding to assign a port to a virtual machine the FIRST time the virtual machine powers on after it is connected to the distributed port group. Dynamic binding is deprecated in ESXi 5.x.
Maybe it’s ephemeral binding and not ephemeral only… First is irrelevant
Can someone check the lab and see whether Dynamic Binding can still be selected on ESX 5.x?
http://pubs.vmware.com/vsphere-51/index.jsp?topic=%2Fcom.vmware.vsphere.install.doc%2FGUID-7C9A1E23-7FCD-4295-9CB1-C932F2423C63.html#com.vmware.vsphere.networking.doc/GUID-6A9312BE-B469-48DE-849B-FFBC4F187218.html?resultof=%2522%2562%2569%256e%2564%2569%256e%2567%2522%2520%2522%2562%2569%256e%2564%2522%2520%2522%2570%256f%2577%2565%2572%2522%2520%2522%2573%2574%2561%2574%2569%2563%2522%2520
You can still select dynamic binding in ESX 5.x, but it warns you that it is deprecated and strongly suggests to use Static instead.
In my opinion C is wrong answer because with ephemeral option there is no binding at all, instead a new port will be created each time on the host. And after the VM is shutdown the port is destroyed. So you can’t “assign” the port.
While in dynamic binding the VM will be binding/unbinding to an already existing port.
Some of these questions really are splitting hairs.
Antti wins